A parallel plate capacitor made to circular plates each of radius R = 6 cm has capacitance C = 100pF. The capacitance is connected to a 230V A.C. supply with an angular frequency of 300 rad/s. The r.m.s. value of conduction current will be:
Answer & explanation
Correct answer: option 4
$I_{R M S} =\frac{E_{R M S}}{X_C}=\omega C E_{R M S}$
$=300 \times 10^{-10} \times 230$ = 6.9 µA